Lock



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O. J. LOONEY LOCK Filed Oct. 8, 1921 2 Sheets-Sheet l lwlll ll a)l'lllllnlululllnlun 0. J L o 0?: 2,3

' INVENTOR @QQ x ATTORNEY Dec. 18 1923. 11,478,343

0. J. LOONEY LOCK Filed 001:. 8, 1921 2 Sheets-Sheet 2 0. cfLooney I QINVENTOR wnmzss: ATTORNEY Patented Dec. l8, 1923.,

GRIN J. LOONEY, OF BRYN MAWR, PENNSYLVANIA.

LOCK.

Application filed October 8, 1921.

T all whom it may concern:

Be it known that I, ORIN J. LooNEY, a citizen of the United States,residing at Bryn Mawr, in the county of Montgomery and State ofPennsylvania, have invented new and useful Improvements. in Locks, ofwhich the following is a specification.

This invention relates to a lock, the general object of the inventionbeing to so form the lock that it will be practically burglar proof bymaking the locking bolts of hook shape with a third bolt for holding thehooked parts in engagement with their striker.

Another object of the invention is to provide key-operated means forshifting the bolts by means of the third bolt.

A further object of the invention is to provide a tumbler which isconnected with the third bolt and is adapted to engage a stationary partfor holding the third bolt in its locking and unlocking positions.

This invention also consists in certain other features of constructionand in the combination and arrangement of the several parts, to behereinafter fully described, illustrated in the accompanying drawingsand specifically pointed out in the appended claim.

In describing my invention in detail, reference will be had to theaccompanying drawings wherein like characters denote like orcorresponding parts throughout the several views, and in which Figure 1is a view of a lock with the cover plate removed and the parts inunlocked position.

Figure 2 is a similar view with the parts in locked position.

Figures 3 and 4 are detail views.

In these views 1 indicates the lock casing and 2 the cover thereforwhich is held in the casing by the screws 3 engaging the tapped holes inposts at. The cylinder 5 passes through one corner of the casing andthis cylinder is held in position by means of the long bolt 6 whichpasses through the post 7 carried by the casing. The end of this bolt isseated in hole 8 in the front of the case so that the end of the bolt iscovered by the face plate 9 which is screwed to the front of the case bythe screws 10 and to the door by the screws 11. The cylinder 5 carriesthe key barrel 12 and the actuating cam 13 is connected with the end ofthis barrel so that Serial No. 506,406.

when the barrel is rotated by a key the cam will be caused to move withit. y

A pair of locking bolts 14: are slidably mounted in the casing withtheir hooked ends 15 lying flush with the face plate 9 when in unlockedposition, as shown in Figure 1, and having their hooked ends engagingthe striker plate 16 when in locked position, as shown in Figure 2. Theinner ends of the bolts are of curved shape and are provided with thehooks 17 at the inner side-s thereof, these curved ends fitting in thecurved recesses 18 formed in the front end of the blocking bolt 19 whichis formed with the substantially wedge-shaped head 20 which has its neckportion 21 located between the recesses 18, the rear portion of the head20 forming the over-hanging parts 22 for en'- gaging the hooks 17 of thelocking bolts. A

channel shaped member 23 is connected with each locking bolt by means ofthe pin 24 and each member is slidably mounted in the casing and isguided therein by the posts 25 and 25. The post 25 limiting the forwardmovement of the member by engaging the flange 26 thereon. These membersembrace side portions of the blocking bolt 19. Springs 27 are carried bythe forward ends of the members 23 and engage holes 28 in the sides ofthe locking bolts 15. These springs act to press the bolts together. Theblocking bolt 19 is provided with an elongated'slot 29 into whichextends a post 30 carried by the casing, this post by engaging the endsof the slot limits the movement of the bolt 19. A lever tumbler ispivoted to bolt 19 and has a lug 32 thereon for engaging the post 30.The rear end of the tumbler extends at right angles over a notch 33formed in one side of the bolt 19 and in rear of a raised part 34 onsaid bolt. The extremity of this right angular extending part is adaptedto be struck by the cam 13 so as to be swung on its pivot to move thelug 32 out of engagement with the post to permit the bolt to be moved.The cam 13 then engages the rear part of the bolt 19 and moves the sameto its new position. A spring 35 holds the lever tumbler in a positionwith the lug 32 extending over the slot 29.

The head 20 of the blocking bolt is provided with a lug 36 which engagesthe guides 37 on the case, for guiding the blocking bolt in itsmovement. Pro ections 38, carried by the casing and its cover, act tohold the parts against locking movement as the bolts are projected andretracted.

It will thus be seen that when it is desired to lock the door or otherbarrier the key is inserted in the barrel and turned and the resultingmovement of the cam will first swing the tumbler 31 on its pivot to movethe lug 32 out of the path of the post and then the cam striking thebolt 19 will move the same forwardly and the head part of this boltengaging the locking bolts 15 will also move them forwardly. The hookedends of these locking bolts 15 will enter the slot in the striker plateand then further movement of the locking bolts will be prevented by theflange 26 on the members 23 engaging the post 25 so that the furthermovement of the blocking bolt will press the locking bolts apart,causing their hooks to engage the rear face of the striker plate at eachend of the slot and the front end of the head will engage the inneredges of the looking bolts at a point flush with the face plate 9, thuspreventing the locking bOlts from being pressed together to free themfrom the striker plate. The tumbler lever will have returned to normalposition thus holding the bolts in projected position.

When it is desired to unlock the door the key is turned in a reversedirection to cause the cam to first swing the tumbler to free its lugfrom the post 30 and then to move the blocking bolt 19 rearwardly. Theinitial movement of this boltwill permit the springs 27 to press thelocking bolts tegether and further movement will cause the bolt so thatit is impossible to force the bolts together again until the blockingbolt is Withdrawn.- The lock is actuated from either side of the door bya key so that it is impossible to unlock the door from the inner side bycutting a hole in the door and inserting the hand to actuate the lock.As there are no projecting parts about the lock there isno danger of aperson injuring himself or tearing his clothes.

It is thought from the foregoing description that the advantages andnovel features of my invention will be readily apparent.

I desire it to be understood that I may make changes in the constructionand in the combination and arrangement of the several parts providedthat such changes fall Within the scope of the appended claim.

What I claim is A lock 01 the character described comprising a casing, apair of locking bolts having inner and outer hooked ends slidablymounted in said casing, guide strips at tached to the inner ends of saidbolts, springs mounted on said guide strips adapted to hold said lockingbolts together means for limiting the "forward movement of the lockingbolts provided on said guide strips, a third bolt having a neck and headengaging the inner hooked ends of the locking bolts and provided with aslot, a projection on the casing entering said slot, a tumbler providedwith a lug for engaging said pro jection pivoted to said third bolt, acylinder mounted Within the casing, a key barrel rotatably mounted insaid cylinder, and a cam carried by said key barrel adjacent one end ofthe tumbler and operating bolt adapted upon turning to engage saidtumbler and swing the lug carried thereon free of the projection in theslot and then engage the operating bolt to move same forward.

In testimony whereof I am); my signa ture.

ORIN J. LOONEY.

